Rod guide



.l c. SMITH March 2.6, 1929.

ROD GUIDE Original Filed Ag. 5, 1926 lnven Io@ J wy/0 i 3,7; im

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Patented Mar. 26, 1929.`

UNITED STATES vPATENT OFFICE.

J CLIFFORD SMITH, OF BELLFLOWER, CALIFORNIA, ASSIGNOR ONE-HALF TO ELI v DICKMAN, OF LA HABRA, CALIFORNIA.

non GUIDE.

Application filed August 3, 1926,'Seria1 No. 126,843. Renewed August 21, 1928.

t-ion between the walls of the-tubing has a ten-r dency to destroy both the sucker rod and tubing. Devices have been constructed for the purpose ofmaintaining the sucker rods 1n spaced relation to the walls of the tubing, but all of these devices with which I am familiar either interfere materially with the upward passage of the fiuid or have parts which, as the guide becomes worn, are liable to separate from the sucker rods and fall down the tubing,

a device which is free from parts which` are liable to separate or become broken and fallv into the well and which does not interfere to any appreciable extent with the upward passage of the fluid. A

A further object of the invention is to pro.- vide aV device of this character which may be employed as a `coupling for the adjacent ends of sucker rod sections.

These and other objects I attain by the constructionshown in the accompanying` drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention and whereinzp Figure 1 is a fragmentary side elevation partially broken away of a sucker rod line embodying guides constructed in accordance with my invention;

Figure 2 is a vertical sectional view taken through one of the guides; n

Figure 3 is a section on the line. 3-3 of Figure 2;

Figure 4 is a fragmentary side elevation of one 0f the tubes which is employed in the construction of theguide.

Referring now more particularlyrto the drawings, the guide comprises a tubular body 10 of slightly less diameter than the tubing so that they enter the pump and F cause considerable damage thereto. An important object of this invention is to providev 11 which is being employed in the well and having at its ends boxes 12'for the reception of pins 13 on the adjacent ends of sucker rod sections 14. The boxes 12 are of considerably less diameter than the tubing and the ends of the cylindrical body converge upon the boxes, as at 15, The converging walls 15 are formed with a plurality of openings 16 permitting passage of the fiuid through the cylindrical body. A rod 17 of the same size as that ordinarily employed in the construction of the sucker rods preferably connects the boxes 12 so as to rigidify the structure.

In constructing the guide section, the boxes 12 are preferably connected by the rod 17 and apiece of pipe of proper diameter for the formation of the cylindrical body is provided and the ends thereof provided with notches 18 forming fingers 19. The ends of these fingers .are bent inwardly until they contact' against the boxes and are welded to the boxes, so that an integral structure is pro-` vided. It is pointed 'outthat a guide of'this character may wear away entirely along one side face thereof without the production of any portions which will fall into the well and interfere with the operation of the pump. Since the guide is of substantially the same diameter as the internal diameter of the pipe, it will follow that the walls of the guide will have contact with the walls of thetubing Yfor a considerable area, thus distributing the thrust of the rods in such fashion that wear at any one given point is materially reduced.

Since the construction hereinbefore set forth is obviously capable of a certain range of change and modification without materially departing from the spirit of the invention, I do not limit myself to such specific structure except as hereinafter claimed.

I claim A sucker rod guide comprising a hollow body having diametrically reduced cylindrical end portions and a cylindrical intermediate portion, the said end portions vbeing joined with theV intermediate portion by shoulders which are ogee in vertical transverse section, portions of the shoulders lying within the ends of the radii of the end por-y tions ofthe body and the said shoulders being provided with openings.

In testimony whereof I hereunto affix my signature.

- J CLIFFORD SMITH. 

